Boiler connection



O. F. BENNETT.

'BOILER CONNECTION.

APPLICATION FILED JULY17, 1918.

Patented Mar. 16,1920.

M lli aim ORVILLE r. BENNETT, or HAVEB-HILL, MASSACHUSETTS.

BOILER CONNECTION.

Specification of Letters Patent. Patented lWIar. 1 6, 1920.

Application filed July 17, 1918. Serial H 0. 245,353.

To all whom it may concern Be it known that I, ORVILLE F. Bnnnn'r'r, acitizen of the United States, and a resident of iiaverhill, in thecounty of Essex and State of Massachusetts, have invented an Improvementin Boiler Connections, of which the following is a specification.

This invention relates to connections for domestic boilers which areadapted to be made from without the boiler, the material, of which theseboilers are formed, being thin and flexible sheet metal unadapted toreceive a screw thread, and which must, therefore, be clamped atopposite sides.

Prior to my invention devices of this character have been produced inwhich a longitudin lly or axially split nipple is provided which isflanged at one end to engage the inner surface of the boiler, andthreaded at the other end to receive the coupling sl but these devicesare objectionable on account of the difficulty of holding the sections,into which the nipple is split, in such a position that the screwthreads are in line, so as to permit the coupling to be screwed thereon.

The object of my invention is to provide a form of boiler connectionwhich is adapted to be placed in position and connected from outside theboiler, and in which the threaded nipple portion is of one solid pieceso that the difiiculty in making the connections, above noted, isavoided, said device being otherwise ada )ted to be easily placed inposition.

I accomplish these objects. by the means shown in the accompanyingdrawing, in which Figure 1 is a side elevation of a coupling embodyingmy invention.

Fig. 2 is a longitudinal central sectional view thereof.

Fig. 3 is an end view, and

Fig. i is a detail view of one of the ring sections which I employ.

As shown in the drawing, the coupling comprises a nipple a, and acoupling sleeve Z), said nipple having one end portion externallythreaded and said sleeve having its bore internally threadedcorrespondingly to receive said nipple. The diameter of the nipple, atits opposite end, is somewhat less than the diameter of the aperture inthe boiler :0, in which this end of the nipple is to be inserted, andthe exterior surface thereof is formed to taper from said inner eve,

end to the middle portion thereof, providing I a conical facets. A ringis provided which is split axiall and radially and is composed of foursections 0, identical in form, and each extending through a quadrant.

The ring formed by said sections is adapted to fit into the boileraperture and has a flange c at one end, of substantially greaterdiameter than the diameter of said aperture, while the bore of said ringis formed to taper from its flanged end, the conical surface thus formedbeing adapted to fit the tapering surface 0/ of the nipple.

The inner end portion of thesleevc, into which the nipple is adapted tobe screwed, is provided with an end flange 6 of diameter than the boileraperture,

the end face of the sleeve being chambered to receive The bore of asuitable packing washer (Z. the sleeve is also enlarged suiliciently toreceive the ring 0, when the parts are in position. The bore of thesleeve at its outer end is threaded to receive a connecting pipe, asindicated.

Each ring section (.1 is provided with reater means to enable the partsto be placed in position in the boiler aperture, and the means which Ipreferably employ consists of angularly bent, stifi' wires c, one ofwhich is secured in the flanged end of each section, each wire beingbent to extend radially of the ring and then at right angles through thering, adjacent its axial, or central longitudinalline, so that, when therin sections are in position the axially extent ing portions will liepractically side by side, as indicated in dotted lines in Fig. 2.

In making the connection with the boiler, the ring sections are firstpassed separately through the boiler aperture and supported within theboiler by the wires, and then the nipple a is passed onto the wires andinto the boiler aperture, so that the enlarged end thereof extendswithin the boiler. The sections are then drawn into position about thenipple and, with the nipple, are drawn outward until the flange engagesthe interior wall of the boiler, and the nipple wedges the ring sectionsinto position, so that further withdrawal of the nipple is prevented.These parts are then held in position by the wires while the couplingsleeve is passed thereon, and screwed onto the outer end of the nipple.At the same time, the inner end portion of the sleeve is passed onto theouter end portion of the ring a,

so that the ring sections are held closely against its nipple.

To enable the sleeve to be passed onto the end of the ring Withoutdiiiiculty, in case one or more of the ring sections should swingsomewhat out of position, the outer end of the ring is slightly beveled,and the inner end portion of the bore of the sleeve is similarlybeveled, as indicated in the drawing. The parts are, however, so formedthat, by the time the inner end of the sleeve has been screwed intoengagement with the surface of the boiler, the straight portion oi thesleeve will have been passed onto the straight portions of the ring, sothat the ring sections will be positively forced into the positions ofFig. 2.

The sleeve will then be screwed firmly against the boiler, so that atight joint Will be formed therebet-Ween, the nipple being held againstrotation, when the sleeve is screwed thereon, by any suitable orconvenient means. The holding Wires .2 may be readily removed n anyconvenient manner,

-,aite r the parts have been screwed together.

The pipe connection may then be made with the outer end of the sleeve,as indicated.

lWith the above described construction a uniform hearing or support isprovided at the inner side of the boiler, or tink, which engages theWall thereof continuously about the aperture therein, so that a tightjoint may be formed betiveen the coupling sleeve This is a feature ofgreat practical importance, for the reason that, on account or thethinness of the Wall, it is easily bent, and, if a continuous uniformsupport is not provided therefor, it will not be held up firmly intoengagement with the end oi the sleeve, so

that leakage would be caused.

I claim 1. A boiler connection comprising a nipple having an enlargedinner end portion, adapted to be inserted in the boiler aperture, anaxially split ring adapted to encircle said enlarged inner end portionWithin the sides of said aperture and having a flanged end adapted toengage the inner surface of the boiler, and coupling sleeve adapted tobe threaded on the outer end of the nipple and to seat at its inner endagainst the outer surface of the boiler.

2. A boiler connection comprising a nipple having an enlarged inner endportion, adapted .to be inserted in the boiler boiler, to form a tightjoint therebetiveen.

3. A boiler connection comprising a nipple adapted to be inserted at itsinner end, .i the boiler aperture and formed exteriorly to taper fromsaid inner end toward the middle thereof, a ring composed a series ofradially divided sections adapted to be interposed between said .nippleand the sides of said aperture and having a tapering bore against whichthe tapered portion of the nipple is adapted to seat and a projectingflange to engage the interior Wall of the boiler, and a coupling sleeveadapted to be threaded on the outer end portion ofsaid nipple and toseat against the exterior of the boiler.

4. A boiler connection comprising a nipple having an enlarged inner endportion, adapted to be inserted in the boiler aperture, an axially splitring adapted to encircle said enlarged inner end portion within thesides of said aperture and having a flanged end adapted to engage the innor surface ottlie boiler, and a coupling sleeve adapted to be threadedon the outer end of the nipple and to fit onto the outer end portion ofsaid ring and seat against the outer surface of the boiler to form aWater tight joint therewith.

5. A boiler connection comprising a nipple having an enlarged inner endportion, adapted to be inserted in the boiler aperture, an axially splitring adapted to encircle said enlarged inner end portion Within thesides oi said aperture and having a flanged end adapted to engage theinner surface of the boiler and a coupling sleeve adapted to be threadedon the outer end of the nipple and to seat against the outer surface ofthe boiler, and temporary supports for each of said ring sectionsarranged to extend about the inner end of said sleeve and through thebore thereof.

In testimony whereof I have signed my name to this specification.

ORVILLE F. BENNETT.

